System for ozonizing liquids.



G. F. BUTLER.

SYSTEM OF ozomzme LIQUIDS.

APPLICATION FILED MAY 20, 1913.

1,089, 1 O8, Patented Mar. 3, 1914.

8 wue m-ko-z n a 6M 951 flame M421 4 lit GEORGE 1E. BUTLER, 01E NIAGARAFALLS, YORK, ASSIGNOR TO AMERICAN OZONE COMPANY, A CORPORATION OF NEWYORK.

SYSTEM FOR OZONIZING LIQUIDS.

To all whom it may concern:

Be it known that I, GEORGE F. BUTLER, a citizen of the United States,residing at Niagara Falls, in the county of Niagara and State of NewYork, have invented certain new and useful Improvements in Systems forOzonizing Liquids, of which the tollowing is a full, clear, and exactdescription.

This invention relates to systems for purifying water and other liquidsby charging the same with ozone. In some systems of this character,which are wholly or partially automatic in their operation, it iscustomary toinject the ozone into a flowing column of the water or otherliquid to be treated on its way to a storage or distributing tank. Theozone injector is usually applied to the moving column of liquid at somepoint between a cutoff valve which controls the column of liquid and thetank, and when the supply of liquid and of ozone arecut off for anyreason, such as the filling of the tank, there is left in the columnbetween the valve and the ozoneinjector, a quantity of un-ozonizedliquid,

which if allowed to stand, eventually finds its way into the tank, and,being untreated, will contaminate the entire contents of the tank.

The object of my invention is to prevent contamination from this cause,and to ac complish this it introduce between the ozone injector and thetank, an automatic valve adapted to deflect from the tank any portion ofthe untreated liquid which may be left standing in the column when thesource of supply is cut ofl The accompanying drawings illustratesomewhat conventionally an ozonizing system of the character referredto.

Figure 1 illustrates the system as a whole; and Fig. 2 a section of theautomatic valve supplied by my invention.

Referring to the drawings, 1 indicates the casing of an ozonizer, which,as constructed by me, comprises two members hermetically sealed togetherat the point 2 and forming a chamber in which the usual electrodes anddielectric of the ozonizer are contained. Immediately beneath thiscasing and attached to it, is another casing 3 containing theusualelectrical transformer supplying current of the proper value totheozonizer, a pilot lamp 4 showing when the current is flowing.

5 is a pipe conveying a column of water or other liquid to be ozonized.This pipe Specification of Letters Patent.

Application filed May 20, 1913.

Patented Mar. 3, 1914.

Serial No. 768,742.

contains a cut-oil valve 6 and leads through a mixing chamber 7, whence,by pipe 8, it enters a receiving tank 9 for the ozonized liquid. Themixing chamber 7 is provided at its lower end, at a point below the pipe8. with a valve 10, which is normally pressed upward to open, by a com)aratively light spring 11. The contents oi the chamber 7 are permittedto escape to a waste-pipe 12 when this valve is open. A pipe 13 whichenters the top of the ozone casing, leads to a point above the mixingchamber 7 and is there fitted with an injector 13 which dis- .charmesozone into the li uid column A pipe 14 conveys air from a suitableair-drying apparatus 15 to the bottom of the ozonizer casing and thussupplies the air which afterward becomes ozonized and is conveyed to theliquid column by the pipe 13. 16 is a pipe provided with a check-valve17 and a cut-ofl 18 conveying water for cooling purposes to the lowerhalf of the ozonizer chamber, whence the water leads by pipe 19 to theupper half of said chamber from which it then escapes by pipe 20 to thewaste-pipe 12. The valve 6 controlling the liquid column isautomatically operated by a solenoid 21, the solenoid being energized toopen the valve, and its core being permitted to fall by its own weight,to close the valve when the solenoid is denergized.

22 is an electric switch of the quick-action variety which controls thecircuit of the solenoid 21 and also of the transformer and ozonizer, theswitch as shown being in the closed-circuit position where the contents23 are bridged. The circuits in detail are not herein shown since theyform no part of the invention. The switch 22 is operated by means of afloat 24 in the tank 9. A vertical rod 25 leads upward from this floatand connects with the switch lever, as shown, so that when the floatrises to a predetermined level, the switch is thrown to open the circuitand thus closes valve 6 and stops the generation of ozone.

In its ordina operation, with the circuit closed and the liquid-flowingfreely through pipe 5 to tank '9 or other depository, the liquid becomescharged with the ozone at the point between the valve 6 and thetankwhere the pipe 13 taps the liquid column, and consequently all ofthe liquid that enters the tank is treated. The liquid in pipe 5 beingnecessarily under a certain head or pressure, holds the valve 10 at thebottom of the mixing-chamber 7 closed, so that there is no escape orwaste of thetreated liquid. When the tank is filled to a predeterminedpoint, the float 24 has been lifted to such an extent that switch 22 isopened, the generation of ozone ceases, and the valve 6 is closed. Theclosure of the valve 6 leaves a column of liquid standing in pipes 5 and8 between the valve and the tank, and all of that portion of the liquidbetween the valve and the ozone injector is untreated with ozone. Ifthis portion of the liquid were allowed to remain in the pipe, it wouldeventually find its way by circulation or flow, into the chamber 7 andthrough the pipe 8 into the tank where it would contaminate the treatedliquid therein. This result, however, is prevented by the fact that assoon as the valve 6 is closed, the pressure or head on the liquid columnbetween the valve and the tank is removed, which permits valve 10 toopen under the action of spring 11, and allows the liquid in chamber. 7and pipe 5 to be defiected= from the tank 9 into the waste-pipe 12,

noeeuoe been drawn oil so that the level falls below the upper limit,the float closes the electric switch, thereby simultaneously startingthe ozonzier and theawater column, the pressure of the latter againclosing the valve 10 and permitting the system to operate in its normalway. Pipe 26 merely carries a faucet for testing purposes.

Having thus described my invention, I claim In a system for ozonizingliquids, the combination of a supply column of the liquid to beozonized, a depository for the ozonized liquid, a cut- 03 valve in saidcolumn, means for injecting ozone into the column at a point between thecut-0E valve and the depository, and a valve located in said columnbetween the depository and the point of ozone injection, said valvebeing adapted to deflect the liquid from the depository and being itselfcontrolled by the pressure in thecolumn.

In witness whereof, I subscribe my signature, in the presence of twowitnesses.

GEQRGE F. BUTLER.

Witnesses:

FRANCIS l. Krcnrn, Jae. A. Gnu-urn.

